T-Mobile has begun pre-orders of the iPhone seven days ahead of its release with the "Unplan" carrier. While the iPhone 5 has been out for some time, T-Mobile will be the only carrier offering the smartphone without a service contract.

T-Mobile recently abandoned service contracts which effectively put an end to the carrier offering contract-subsidized phones. In a sort of ironic twist, you can now buy phones at full price or enter into a contract payment plan to pay off the phone over the course of a year or two years.

Pre-orders are now open on the $99 + $20/month for 24 months 16GB iPhone 5 in black or white. The 32GB and 64GB versions are also both available under the same $20/month for 24 months terms, but will cost you $199 and $299 respectively. How do you feel about the new contract-less plans that T-Mobile has switched to? Let us know in the comments.